Seals minor leaks from the inside: Sentinel Leak Sealer circulates with the system water, reaches hard-to-find pin-hole leaks and weeping joints, and forms a soft seal at the leak
- Seals minor leaks from the inside: Sentinel Leak Sealer circulates with the system water, reaches hard-to-find pin-hole leaks and weeping joints, and forms a soft seal at the leak
- Seal forms within 24 hours: the seal normally forms within 24 hours, depending on the size of the leak and the system temperature; leave it in the system once it has been added
- Will not block your system: the dispersible, silicone-based formula will not cause blockages, and it reaches leaks that are hard to get to, including in underfloor heating circuits
- Treats a typical home: one 1 litre bottle treats up to 100 litres of system water, typically 8 to 10 radiators, or up to 100 m2 of underfloor heating; larger systems need 2 litres
- Easy to add: dose sealed systems through the filling loop with a Sentinel dosing vessel, or open-vented systems through the feed and expansion tank, then run the heating for 15 minutes
- Endorsed and made in Britain: suitable for systems with aluminium components; for indirect central heating only, never drinking water; after sealing, protect with Sentinel X100